Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0M callsign genealogy
Currently held by HARTMAN JR, DONALD E
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by AB0M's current licensee, walking backwards.
- HARTMAN JR, DONALD EIAgranted 2004-01-06cancelled 2010-04-20
Successor callsigns
Callsigns held now by people who previously held AB0M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB0M, oldest first.
- LANG, CREIGHTON L IA1998-01-23 → cancelled 2010-01-26
- HARTMAN JR, DONALD E IA2020-02-04 active